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Molecular magneto-ionic proton sensor in solid-state proton battery

Author

Listed:
  • Yong Hu

    (University at Buffalo, The State University of New York)

  • Zipeng Guo

    (University at Buffalo, The State University of New York)

  • Yingjie Chen

    (University at Buffalo, The State University of New York)

  • Chi Zhou

    (University at Buffalo, The State University of New York)

  • Yuguang C. Li

    (University at Buffalo, The State University of New York)

  • Shenqiang Ren

    (University at Buffalo, The State University of New York
    University at Buffalo, The State University of New York
    University at Buffalo, The State University of New York)

Abstract

High proton conductivity originated from its small size and the diffusion-free Grotthuss mechanism offers immense promise for proton-based magneto-ionic control of magnetic materials. Despite such promise, the realization of proton magneto-ionics is hampered by the lack of proton-responsive magnets as well as the solid-state sensing method. Here, we report the proton-based magneto-ionics in molecule-based magnet which serves as both solid-state proton battery electrode and radiofrequency sensing medium. The three-dimensional hydrogen-bonding network in such a molecule-based magnet yields a high proton conductivity of 1.6 × 10−3 S cm−1. The three-dimensional printed vascular hydrogel provides the on-demand proton stimulus to enable magneto-ionics, where the Raman spectroscopy shows the redox behavior responsible for the magnetism control. The radiofrequency proton sensor shows high sensitivity in a wide proton concentration range from 10−6 to 1 molar under a low working radiofrequency and magnetic field of 1 GHz and 405 Oe, respectively. The findings shown here demonstrate the promising sensing application of proton-based magneto-ionics.

Suggested Citation

  • Yong Hu & Zipeng Guo & Yingjie Chen & Chi Zhou & Yuguang C. Li & Shenqiang Ren, 2022. "Molecular magneto-ionic proton sensor in solid-state proton battery," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34874-6
    DOI: 10.1038/s41467-022-34874-6
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